CN215644285U

CN215644285U - Vacuum switch tube and vacuum contactor thereof

Info

Publication number: CN215644285U
Application number: CN202121995060.3U
Authority: CN
Inventors: 苏亚军
Original assignee: Nantong Development Zone Dongsheng Electronics Co ltd
Current assignee: Nantong Development Zone Dongsheng Electronics Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-01-25
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to a vacuum switch tube and a vacuum contactor thereof, wherein a shield cover is arranged in a ceramic shell, an upper connecting piece is arranged at the top of the shield cover, a lower connecting piece is arranged at the bottom of the shield cover, a groove and a first fixing hole are arranged on the upper connecting piece, a bulge and a first hole are arranged at the corresponding position of the ceramic shell, the first fixing hole is arranged above the groove, a fixing screw fixes the shield cover and the ceramic shell through the first hole and the first fixing hole, a second fixing hole is arranged at the central position of the lower connecting piece, a second hole matched with the second fixing hole is arranged on the ceramic shell, a limiting plate is arranged below the lower connecting piece, the limiting plate is fixedly connected with a ceramic shell and is in sliding connection with a movable guide rod, the bottom of the limiting plate is fixedly connected with a corrugated tube and a corrugated tube limiting block, a protection plate is arranged at the contact position of the corrugated tube and the movable guide rod, and an annular groove body is arranged on the movable guide rod, the guard plate is fixedly arranged on the annular groove body.

Description

Vacuum switch tube and vacuum contactor thereof

Technical Field

The utility model relates to the technical field of vacuum switches, in particular to a vacuum switch tube and a vacuum contactor thereof.

Background

The vacuum switch tube, also known as a vacuum arc-extinguishing chamber, is a core component of a solid insulation ring main unit, and generally comprises an insulation shell made of glass or ceramics, wherein a shielding cover, a moving contact and a static contact are arranged inside the shell, the moving contact is connected with a moving conducting rod, the static contact is connected with a static conducting rod, and one end of each of the moving conducting rod and the static conducting rod extends out of the shell. The existing vacuum switch tube for the 3.6kv contactor is required to have the characteristics of long mechanical life, namely 30 ten thousand times and long electrical life, namely, 25 ten thousand times for AC-3 and 10 ten thousand times for AC-4, in the using process of a user, the fatigue mechanical life resistance of the existing vacuum switch tube is poor, the mechanical fatigue life is reduced, and the service life is difficult to ensure.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the prior art, the utility model provides a vacuum switch tube and a vacuum contactor thereof, which solve the technical problems.

The technical problem solved by the utility model can be realized by adopting the following technical scheme:

a vacuum switch tube comprises a ceramic shell, wherein a shielding cover is arranged in the ceramic shell, an upper connecting piece is arranged at the top of the shielding cover, a lower connecting piece is arranged at the bottom of the shielding cover, a groove and a first fixing hole are formed in the upper connecting piece, a bulge and a first hole are formed in the position corresponding to the ceramic shell, the bulge and the groove on the ceramic shell are matched and used for fixing the shielding cover, the first fixing hole is formed above the groove, a fixing screw fixes the shielding cover and the ceramic shell through the first hole and the first fixing hole, a second fixing hole is formed in the central position of the lower connecting piece, a second hole matched with the second fixing hole is formed in the ceramic shell, a limiting plate is arranged below the lower connecting piece, the limiting plate is fixedly connected with the ceramic shell in a sliding manner, the bottom of the limiting plate is fixedly connected with a corrugated tube and a corrugated tube limiting block, bellows one end and limiting plate fixed connection, one end and movable guide arm fixed connection, the bellows is provided with the guard plate with movable guide arm contact department, be provided with annular cell body on the movable guide arm, the guard plate is fixed to be set up on annular cell body.

Preferably, the section of the corrugated pipe limiting block is of an L-shaped structure, and the side edge of the corrugated pipe limiting block is fixedly connected with the ceramic shell.

Preferably, the top of the ceramic shell is provided with a static end cover, the bottom of the ceramic shell is provided with a dynamic end cover, the static end cover is fixedly connected with a static guide rod, the dynamic end cover is slidably connected with a dynamic guide rod, the static guide rod is fixedly connected with a static contact, and the dynamic guide rod is fixedly connected with the dynamic contact through a dynamic guide base.

Preferably, a rubber sealing plate is fixedly arranged above the movable end cover.

Preferably, the bottom of the movable guide rod is provided with a base, and the base is provided with an insulating anti-skidding pasting layer.

Preferably, the top of the static end cover is provided with an upper insulating sealing cover, and the bottom of the movable end cover is fixedly connected with a lower insulating sealing cover.

A vacuum contactor comprising a vacuum switching tube as claimed in any one of the preceding claims.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the annular groove body is arranged on the movable guide rod, and the protection plate is fixedly arranged on the annular groove body, so that the temperature of the corrugated pipe is increased by transferring the waste heat of the movable conductive rod to the corrugated pipe after the vacuum arc-extinguishing chamber breaks large short-circuit current, the fatigue strength of the corrugated pipe is further prevented from being influenced, and the service life of the whole switch tube is prolonged.

2. According to the corrugated pipe protection device, the section of the corrugated pipe limiting block is set to be of an L-shaped structure, the side edge of the corrugated pipe limiting block is fixedly connected with the ceramic shell, the top of the corrugated pipe limiting block is connected with the limiting plate, and the corrugated pipe limiting block can protect the operation of the corrugated pipe and prolong the service life of the corrugated pipe.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1, a vacuum switch tube, including ceramic package 1, the inside shield cover 8 that is provided with of ceramic package, the shield cover top is provided with connecting piece 16, and the bottom is provided with down connecting piece 19, be provided with recess 20 and first fixed orifices on going up the connecting piece, be provided with arch 17 and first hole on the position that ceramic package corresponds, arch and the recess phase-match on the ceramic package are used for fixed shield cover, arch and ceramic package integrated into one piece. First fixed orifices sets up in the recess top, and the shield cover is fixed mutually with ceramic shell through first hole and first fixed orifices to the set screw, the central point of connecting piece puts down and is provided with the second fixed orifices, be provided with on the ceramic shell with second fixed orifices assorted second hole, the set screw carries out fixed connection with ceramic shell and lower connecting piece through second fixed orifices and second hole. The second hole and the first hole which are arranged on the ceramic shell are both arranged not to penetrate through the ceramic shell, so that the sealing performance of the vacuum switch tube is ensured. The shielding cover is fixed with the ceramic shell through the arrangement of the upper connecting piece and the lower connecting piece, the fixing holes are formed in the upper connecting piece and the lower connecting piece, the situation that the connecting holes are directly formed in the shielding cover and connected with the ceramic shell is avoided, and the vacuum environment in the shielding cover is guaranteed.

The below of lower connecting piece 19 is provided with limiting plate 9, limiting plate and 1 fixed connection of ceramic casing and movable guide 6 sliding connection, limiting plate 9 bottom and bellows 11 and bellows stopper 10 fixed connection, bellows top and limiting plate fixed connection, the position fixed connection at bellows bottom place when the guide arm that moves that sets up on the bottom and the movable guide arm stew, the bellows is provided with guard plate 12 with moving guide arm contact department, it is provided with annular cell body on the guide arm to move, the guard plate is fixed to be set up on annular cell body.

Preferably, the section of the bellows limiting block 10 is an L-shaped structure, and the side edge is fixedly connected with the ceramic shell.

The bottom of the corrugated pipe is fixedly connected with the movable guide rod, and the corrugated pipe is driven to operate by the operation of the movable guide rod. The corrugated pipe top is limited by the limiting plate, the peripheral direction of the corrugated pipe is limited by the corrugated pipe limiting block, the corrugated pipe can be protected in operation, and the service life of the corrugated pipe is prolonged.

Preferably, the top of the ceramic shell is provided with a static end cover 2, the bottom of the ceramic shell is provided with a dynamic end cover 3, the static end cover is fixedly connected with a static guide rod 4, the dynamic end cover is slidably connected with a dynamic guide rod 6, the static guide rod 4 is fixedly connected with a static contact 5, and the dynamic guide rod 6 is fixedly connected with a dynamic contact 7 through a dynamic guide base 18.

Preferably, a rubber sealing plate 13 is fixedly arranged above the movable end cover. The arrangement of the rubber sealing plate has a buffering effect on the corrugated pipe, and the corrugated pipe is prevented from being directly connected with the ceramic shell, so that the damage of the corrugated pipe is caused.

Preferably, the bottom of the movable guide rod is provided with a base 14, and the base is provided with an insulating anti-slip adhesive layer 15.

Preferably, the top of the static end cover is provided with an upper insulating sealing cover 21, and the bottom of the movable end cover is fixedly connected with a lower insulating sealing cover 22. The rubber sealing plate, the upper insulating sealing cover and the lower insulating sealing cover are arranged, so that the air tightness of the vacuum switch tube is improved.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A vacuum interrupter, comprising: comprises a ceramic shell, a shielding cover is arranged in the ceramic shell, an upper connecting piece is arranged at the top of the shielding cover, a lower connecting piece is arranged at the bottom of the shielding cover, a groove and a first fixing hole are arranged on the upper connecting piece, a bulge and a first hole are arranged at the position corresponding to the ceramic shell, the bulge on the ceramic shell is matched with the groove and used for fixing the shielding cover, the first fixing hole is arranged above the groove, a fixing screw fixes the shielding cover and the ceramic shell through the first hole and the first fixing hole, a second fixing hole is arranged at the central position of the lower connecting piece, a second hole matched with the second fixing hole is arranged on the ceramic shell, a limiting plate is arranged below the lower connecting piece, the limiting plate is fixedly connected with the ceramic shell and is movably and slidably connected with a guide rod, and the bottom of the limiting plate is fixedly connected with a corrugated pipe and a corrugated pipe limiting block, bellows one end and limiting plate fixed connection, one end and movable guide arm fixed connection, the bellows is provided with the guard plate with movable guide arm contact department, be provided with annular cell body on the movable guide arm, the guard plate is fixed to be set up on annular cell body.

2. A vacuum interrupter as defined in claim 1, wherein: the cross section of the corrugated pipe limiting block is of an L-shaped structure, and the side edge of the corrugated pipe limiting block is fixedly connected with the ceramic shell.

3. A vacuum interrupter as defined in claim 1, wherein: the ceramic shell is characterized in that a static end cover is arranged at the top of the ceramic shell, a movable end cover is arranged at the bottom of the ceramic shell, the static end cover is fixedly connected with a static guide rod, the movable end cover is slidably connected with the movable guide rod, the static guide rod is fixedly connected with a static contact, and the movable guide rod is fixedly connected with a movable contact through a movable guide base.

4. A vacuum interrupter as defined in claim 3, wherein: and a rubber sealing plate is fixedly arranged above the movable end cover.

5. A vacuum interrupter as defined in claim 1, wherein: the bottom of the movable guide rod is provided with a base, and the base is provided with an insulating anti-skidding pasting layer.

6. A vacuum interrupter as defined in claim 3, wherein: the top of the static end cover is provided with an upper insulating sealing cover, and the bottom of the movable end cover is fixedly connected with a lower insulating sealing cover.

7. A vacuum contactor comprising a vacuum contactor as claimed in any one of claims 1 to 5.